Byleth's only attacks with a sword are rapid jab, his tilts, up smash, up air, and up special. Corrin's meanwhile are jab 2 and 3, his tilts, dash attack, half of down smash, half of n-air, f-air, up air. That's not much more than Link or Hero, so why are Byleth and Corrin textbook swordfighters but Link and Hero are all good?
I don’t really get how the idea of “textbook sword fighter” can apply to a character that is more of a “weapons master”.
I was using their playstyles as a metric. Not how many sword attacks they have (to do so would be to imply that you have to have non-sword attacks to truly be unique. You don't.). The only sword quality that mattered was if they used one as a primary weapon since those were the characters I was looking at.
I'm not saying these characters are bad, boring, or exactly the same either, just that at a surface level, those are the ones that blend together the most (or are another Link. Also I'm not counting Marth because he's the original).
Personally, I like way more of the more traditional and clone swordfighters than the unique ones. I do think a lot of them have missed opportunities in their movesets like how Byleth is a response to the people who are tired of
Fire Emblem swordfighters rather than focusing on the unique aspects of his Sword of the Creator, time powers, and role as a tactician (he could have had a really cool adjunct system), and the other Links have loads of things they could do that isn't what Link prime already does, but I do think they're all pretty fun characters. Except Toon Link. He's pretty meh.
Side Note: I still can't grasp Meta Knight's playstyle. I keep trying to treat him like a sword Jiggs, but that's
really not what he is, and I can never really get in the groove with him.